携帯型GPSによる農作業履歴の記録と履歴情報の利用 －播種履歴を考慮したダイズ不耕起播種栽培の評価－

日本作物学会紀事

松尾 和之¹  濱口 秀生¹  渡邊 好昭¹  渡邊 和洋¹ 

[1] 中央農業総合研究センター

关键词: No-tillage seeding;    不耕起播種;    Phytopthora rot;    茎疫病;    Record of seeding;    播種履歴;    Soybean;    ダイズ;    Wet injury;    湿害;    Yield reduction;    減収要因;   

DOI  :  10.1626/jcs.80.448

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

In order to clarify the yielding performance of no-tillage seeding cultivation of soybean, the effects of field locations and seeding dates on seedling establishment and yield were studied in the staple cropping area of soybean in Ibaraki pref. for five years by using a newly developed system for recording agricultural works with GPS. The failure of seedling establishment tended to occur only in the poor drainage area that received heavy rain 1-3 days after seeding under the conventional seeding condition. In contrast, the field with poor seedling establishment was observed throughout the surveyed area and irrespective of rainfall under the no-tillage seeding condition. The survey for five years revealed a negative correlation between seeding date and the soybean yield in each field, but there was no significant difference in the regression line between the no-tillage seeding and the conventional seeding. The result of multiple regression analysis showed the importance of phytopthora rot of soybean as a cause of yield loss under the no-tillage seeding condition. The relative yield compensated for yield reduction by delaying seeding was calculated by using regression equation of yield and seeding date. The field map, in which the fields were tilled with different colors according to relative yield, indicated that high-risk fields are distributed into the specific area.

【 授权许可】

Unknown